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Realtek's $10 tiny 10GbE network adapter is coming to motherboards later this year
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
Add to that, that most homes have multiple devices that you want connected. So you need a fiber switch as well. 150usd will get you a mikrotik crs305, with 4 sfp+ ports. And you'll probably want a router, but perhaps you can offload that to your ISP, kinda like routing on a stick.